Narrated Ubaydullah ibn Khalid as-Sulami: The Messenger of Allah ﷺ made a brotherhood between two men, one of whom was killed (in Allah's path), and a week or thereabouts later the other died, and we prayed at his funeral). The Messenger of Allah ﷺ asked: What did you say? We replied: We prayed for him and said: O Allah, forgive him, and join him to his companion. The Messenger of Allah ﷺ said: What about his prayers since the time the other died, and his fasting since the time the other died--the narrator Shubah doubted the words, "his fasting--and his deeds since the time the other died. The distance between them is just like the distance between heaven and earth.

Narrated Ubayd ibn Khalid as-Sulami,: A man from the Companions of the Prophet ﷺ, said: The narrator Saad ibn Ubaydah narrated sometimes from the Prophet ﷺ and sometimes as a statement of Ubayd (ibn Khalid): The Prophet ﷺ said: Sudden death is a wrathful catching.